From: Dimitri Sivanich <sivanich@sgi.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
John Stultz <johnstul@us.ibm.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
Jack Steiner <steiner@sgi.com>
Subject: [PATCH] x86 uv: lower UV rtc clocksource rating
Date: Thu, 16 Feb 2012 14:10:42 -0600 [thread overview]
Message-ID: <20120216201042.GA10260@sgi.com> (raw)
Lower the rating of the UV rtc clocksource to just below that of the tsc.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
---
arch/x86/platform/uv/uv_time.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
Index: linux/arch/x86/platform/uv/uv_time.c
===================================================================
--- linux.orig/arch/x86/platform/uv/uv_time.c
+++ linux/arch/x86/platform/uv/uv_time.c
@@ -37,7 +37,7 @@ static void uv_rtc_timer_setup(enum cloc
static struct clocksource clocksource_uv = {
.name = RTC_NAME,
- .rating = 400,
+ .rating = 299,
.read = uv_read_rtc,
.mask = (cycle_t)UVH_RTC_REAL_TIME_CLOCK_MASK,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
@@ -379,10 +379,6 @@ static __init int uv_rtc_setup_clock(voi
if (!is_uv_system())
return -ENODEV;
- /* If single blade, prefer tsc */
- if (uv_num_possible_blades() == 1)
- clocksource_uv.rating = 250;
-
rc = clocksource_register_hz(&clocksource_uv, sn_rtc_cycles_per_second);
if (rc)
printk(KERN_INFO "UV RTC clocksource failed rc %d\n", rc);
next reply other threads:[~2012-02-16 20:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-16 20:10 Dimitri Sivanich [this message]
2012-02-17 12:02 ` [PATCH] x86 uv: lower UV rtc clocksource rating Ingo Molnar
2012-02-17 14:16 ` Dimitri Sivanich
2012-02-19 12:51 ` Ingo Molnar
2012-02-20 11:46 ` [tip:x86/uv] x86/UV: Lower " tip-bot for Dimitri Sivanich
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